Trait nsi::FnWrite

pub trait FnWrite<'a>: FnMut(&str, usize, usize, usize, usize, usize, usize, &PixelFormat, &[f32]) -> Error + 'a { }

A closure which is called for each bucket of pixels the OutputDriver instance sends during rendering.

It is passed to ɴsɪ via the "callback.write" attribute on that node.

Example

let write = nsi::output::WriteCallback::new(
    |name: &str,
     width: usize,
     height: usize,
     x_min: usize,
     x_max_plus_one: usize,
     y_min: usize,
     y_max_plus_one: usize,
     pixel_format: &nsi::output::PixelFormat,
     pixel_data: &[f32]| {
        /// Send our pixels to some texture for realtime display.
        nsi::output::Error::None
    },
);

ctx.set_attribute(
    "oxidized_output_driver",
    &[
        nsi::string!("drivername", "ferris"),
        // While rendering, send all pixel buckets to the write closure.
        nsi::callback!("callback.write", write),
    ],
);

Implementors